コード例 #1
0
ファイル: BSA.cs プロジェクト: foesmm/libBSA
        public static IBSA Open(string filename)
        {
            var stream = new BufferedStream(new FileStream(filename, FileMode.OpenOrCreate, FileAccess.ReadWrite), 8 * 1024 * 1024);

            var checksumStopwatch = Stopwatch.StartNew();

            byte[] checksum = MD5.Create().ComputeHash(stream);
            checksumStopwatch.Stop();
            Debug.WriteLine(
                "MD5 checksum {0}\nTook {1}",
                BitConverter.ToString(checksum).Replace("-", string.Empty).ToLower(),
                checksumStopwatch.Elapsed
                );
            stream.Seek(0, SeekOrigin.Begin);
            var reader    = new BinaryReader(stream);
            var signature = (ArchiveSignature)reader.ReadUInt32();
            var version   = (ArchiveVersion)reader.ReadUInt32();

            if (File.Exists(filename + ".xml"))
            {
                IBSA archive = null;
                using (var xmlReader = new StreamReader(string.Format("{0}.xml", filename)))
                {
                    var serializer = new XmlSerializer(typeof(BSA));
                    try
                    {
                        archive          = (IBSA)serializer.Deserialize(xmlReader);
                        archive.Filename = filename;
                        archive.SetStream(stream);
                    } catch (InvalidOperationException ioe)
                    {
                    }
                }
                if (archive != null && ByteArrayCompare(checksum, archive.Checksum))
                {
                    return(archive);
                }
                else
                {
                    Debug.WriteLine("Contents Changed, need recalculate");
                }
            }
            stream.Close();

            if (signature == ArchiveSignature.Oblivion && version == ArchiveVersion.Fallout3)
            {
                return(new Fo3Archive(filename));
            }
            else
            {
                throw new UnsupportedArchiveException(signature, version);
            }
        }
コード例 #2
0
        private static void CreateAssetPatch(Settings settings, IBSA original, Fo3File originalRecord, Fo3File resultRecord, RecordAction recordAction)
        {
            string patchName;
            string patchFile;

            // @todo: memory stream and name with md5
            using (var patchStream = new MemoryStream())
            {
                // @todo: lock
                byte[] originalRecordBytes;
                if (original != null)
                {
                    lock (original)
                    {
                        originalRecordBytes = originalRecord.GetData(original.Reader);
                    }
                }
                else
                {
                    originalRecordBytes = originalRecord.GetData();
                }
                var referenceBytes = resultRecord.GetData();
                BsDiff.Create(originalRecordBytes, referenceBytes, patchStream);

                patchStream.Seek(0, SeekOrigin.Begin);
                patchName = new Guid(MD5.Create().ComputeHash(patchStream)).ToString();
                recordAction.PatchName = patchName;
                patchFile = string.Format("{0}\\{1}.patch", settings.GetTempFolder("Patches"), patchName);

                try
                {
                    using (var fileStream = new FileStream(patchFile, FileMode.CreateNew))
                    {
                        patchStream.Seek(0, SeekOrigin.Begin);
                        patchStream.CopyTo(fileStream);
                    }
                }
                catch (IOException exc)
                {
                    // ignored
                }
            }
        }